Module 5 A Lesson in a LabLast week, we had some scientific experiments, whose aims are to learn how substances react with each other. We need some ordinary facilities and electrical equipment, such as balance, crucible, tongs and so on. One of the experiments is to find out if iron rusts in airfree water. First, halffill a test tube with water and then boil it to make sure there is no air in the water. Next, put two or three clean nails in the water and add some oil to the water to keep air out of the water. After that, leave the tube for one week. We can draw a conclusion that iron does not rust in airfree water. By doing the experiments, we also came to some other conclusions.The experiments are really interesting and astonishing.上周，我们做了一些科学实验，它们的目的是学习物质是如何相互反应的，我们需要一些普通的设备和电子仪器，比如天平，坩埚，小钳子等。其中的一个实验是弄清楚铁在无空气的水中是否生锈。首先，在一个试管中加一半水并将水煮沸以确保水中没有空气。然后，在水中放入 2 根或 3 根干净的铁钉并加入油以防止空气进入水中。在那之后，将试管放置一周。我们可以得出结论：铁不会在无空气的水中生锈。通过做这些实验，我们也得出了一些其他的结论。实验真得有趣和令人吃惊。
